Chapter 23, Problem 23.44P

(a)

Interpretation Introduction

Interpretation:

The number of theoretical plates present has to be calculated.

Concept introduction:

Plates of column:

The relationship between $\text{N}\text{and}{\text{w}}_{\text{1/2}}$

$\begin{array}{l}\text{N}\text{=}\frac{\text{5}\text{.55}{\text{t}}_{\text{r}}{}^{\text{2}}}{{\text{w}}_{\text{1/2}}{}^{\text{2}}}\\ \text{Where,}\\ \text{N}\text{-}\text{number}\text{of}\text{plates}\text{on}\text{column}\\ {\text{t}}_{\text{r}}\text{-}\text{retention}\text{time}\\ {\text{w}}_{\text{1/2}}\text{-}\text{half-width}\end{array}$

(b)

Interpretation Introduction

Interpretation:

The plate height of the column with $\text{10}\text{cm}$ long has to be calculated.

Concept introduction:

Plate height:

The relationship between $\text{H}\text{and}\text{L}$ is given by

$\text{H}\text{=}\frac{\text{Length}\text{of}\text{the}\text{column}}{\text{Number}\text{of}\text{plates}\text{on}\text{column}}\text{=}\frac{\text{L}}{\text{N}}$